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The Ultra Flat Architecture is a new concept of fixed-mobile convergent networks that aims to scale well with the mobile Internet traffic explosion prognosticated for the next 5–10 years. This paper presents a new delegation-based UFA signaling framework using HIP, IEEE 802.21 and the context transfer protocol. The main procedures contributed by this(More)
The Ultra Flat Architecture is a new concept of fixed mobile convergent networks that aims to scale well with the mobile internet traffic explosion prognosticated for the next 5–10 years. This paper investigates the adequacy of three different signaling protocol alternatives for the Ultra Flat Architecture based on operator requirements. The applied(More)
This paper describes an advanced timing attack scheme on cryptographic algorithms. An attacker can use our method to break a cryptographic algorithm by reconstructing the secret key. The paper contains a detailed explanation of our novel algorithm, furthermore, a practical example for its use. As a proof-of-concept, the method is shown on a specific(More)
This paper is committed to give an overview of the Host Identity Protocol (HIP), to introduce the basic ideas and the main paradigms behind it, and to make an exhaustive survey of mobility management schemes in the Host Identity Layer. The authors' goal is to show how HIP emerges from the list of potential alternatives with its wild range of possible(More)
The basic idea of QoS is to provide mechanisms that can offer different service levels, which are expressed through well-defined parameters that are specified at run-time on the basis of need. Bit rate, throughput, delay, jitter, and packet loss rate are all examples of common QoS parameters suggested for packet networks. These parameters are all aimed to(More)
Integration of application layer traffic optimization (ALTO) in software-defined mobile networks could have several benefits for orchestration of endpoint selection for distributed services. ALTO can provide guidance, e.g., in the redirection of end users to appropriate in-network cache, content distribution network server or virtual network function(More)
Future wireless networks are moving fast towards all-IP network architectures and mobile operators are expanding their services outside traditional cellular networks becoming multi-access operators. This lays stringent requirements on access security, where implementing consistent security policies over disparate radio accesses becomes a challenge. In this(More)
Keywords: Ultra flat architecture Internet interworking SIP HIP PMIP IEEE 802.21 a b s t r a c t Telecommunication suppliers predict a huge mobile Internet traffic increase for the next decade. It seems to be technically challenging and expensive to adapt current mobile network architectures to the increasing traffic demand. Core network technology must(More)
—Security is an increasingly important issue for networked services. However, since networked environments may exhibit varying networking behavior and contain heterogeneous devices with varying resources tunable security services are needed. A tunable security service is a service that provides different security configurations that are selected, and(More)